Coal screening and washing machine



L F. MARTIN. COAL SCREENING AND WASHING MAH`|NL r-pLEo my 18. 1922.

Dec. 191922. 11,439,252

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usaran WILLIAM MARTIN, 0F W'ORIVLEYSBURG,`PENNSYLVANIA.`

COAL SGBEENNG AND W'ASHING LIACHINE,

Application filed May 18, 1922. Serial No. 561,981.

To all whom t may concern- Be it known that l, WILLIAM F. MARTIN, a citizen of the United States, residing at llToi-inleysburg, in the county. of Dauphin and .State of Pennsylvania, have inventedv certain new and usefullmprovements in the like and has reference more `particularly v-to machines of thev character. employing a plurality of pockets beneath a screen for receiving waste material passing through said screen.

The object of the present invention is to .provide `an improved. arrangement kot `valves for controlling discharge ot the waste material from the collecting pockets.

ln carrying out the above end, a further aim is to provide novel means whereby the valves may be repeatedly opened and closed by power-operated means, preferably'driven by a water wheel. y

`Wth the foregoing in view, the invention resides in the novel subjectmatter hereinafter described and claimed, the description being supplemented by the accompanying drawings. 'l

Figure 1 is a side elevation partly broken away and in section, showing a machine constructed in accordance with my invention. c

Figure 2 is a longitudinal sectional view showing a somewhat different arrangement of valves. v

Figure 3 is a vertical transverse sectional View as indicated by line 3 3 ot Fig. 2f

AFigure t is a duplicate ot Fig. 2 with the exception that it illustrates a different 'form oi collecting pocket. f

ln the drawings above brieliy described,

\ the numeral. 1 designates a suitably inclined trance within which is secured an appropriate screen 2. Beneath. this screen, the

sides'd which converge downwardly, while in Fig. a, the opposed sides of said. pockets are curved as indicated by the numeral L1,

In both instances, gap 5 is lett between the lower edges oit the side walls through which the contents of' the pockets are adapted 'to discharge. For controlling these gaps or outlets, l employ a plurality 'olf slidin valve plates 6 which may be supported in 'any preferred manner, for instanceby angle iron tracks 7 secured to the sides of the frame. 1.

`The several valve plates 6 are secured to alongitudinal connecting rod S which may be moved either by hand or by power to co-nf trol the valves. l prefer howevervk to connect the rod 8 with a depending crank arm 9 yon a transverse rock shaft 10 by means of a link or the like 11, said rock shaft being appropriately mounted at onev end of the frame and having a crank arm 12 adapted to be operated by power. ln the present showing', a-pitman rod 13 is connected adjustabtly .or otherwise with the arm 12 and it desired the length of said pitman; rod may ybe adjustable, for instance by means of' a turn-buckle lll. ln the present showing, the

rod 13 has suitable connection with an ec-y centric 15 on the sha'lft 16 of a water wheel 17, the latter being located beneath the discharge spout 18 onto .which water troni the inclined bottom 19 of the frame 1, is discharged. rlhe shaft 16 may be suitably supported and l have shownl U-shaped hangers 20 for this purpose. f

By the construction described, it will be seen that rotation oi' the water wheel 17 will cause stroking of the pitinan 13, thereby oscillating the shaft 10 and producing a reciprocating motion of the connecting rod 8, the result being that the valves 6 are alternately opened and closed and it will be seen that whenever said valves open, the waste material which has accumulated in the pockets 3 will be discharged therefrom. The valves .may be arranged on the connecting rod 8 so as toopeii and close in' unison, Aas will be clear from Figs. il and 4l, or the-arrangementinay be such that the valves will open sucessively and close in reverse order, (see Fig). In all 'forms ofk construction, the machine is simple yet eicientand reliable and hence I prefer to employ the details shown. lt is to be understood however that within the scope oit the invention as claimed.,

numerous minor changes maybe made;

Iclaim: 1. rlhe combination ot a frame, a screen in said frame, collecting pockets in the frame beneath thescreen, said pockets hav-` ing` onlet openings, valves normally closing Said oulet openings, a connecting' rod aseociaed with Said valves and niovable longitudinally 'loi producing simultaneous movenient hei'eof, a rotary di'ive cleinen, and ineane` iol' converting' rotary movement of Said drive elementA into reciprocatingI moveinen; for Said rod.

A sci'eening; machine comprising a infinie, eceen thei'ein, a plurality of collecting ockets in "che frame beneath jshe screen, each pocket having an onlet opening in its bottoni, slide valves under said pockets for coniolling said openings, guiding` means foi; said slide valves caiiied by he iziaine, a longitudinally extending connecting,T bar connected with all of Said slide valvee, a water wheel tni'ned by water passing; from said 1frame, and means actuated by said Water Wheel for shifting said connecting bar to sininleneously move Seid valves.

3. A screening` machine comprising a frame, a screen in Said frame upon which material and Waer are adapted to be delivered, pocketsin the frame beneath said screen, each pocket having an outlet opening, valves for controlling the oulet onenings of said pockets, a Water wheel driven by the Water supplied to the screening `inechine, and connecting means between said Waei Wheel and said valves for alteinetely opening and closing the lattei-- el. A screeningmachine comprising a memo@ lahaine, a screen in Said frame noon which inatei'ial and Waei' are adaped to be delivered, pockets in the frame beneath said screen, each pocket having` an oucle opening, slide valve-e` 'for contiolling the oulets o said pockets, a connecting rod connected with said slide valves, a Water wheel driven by the Water supplied to the screening inacbine, and connecting ineans between Said connecting rod and said Water Wheel for i'eciplocating Jshe former by means of the la''lei. l

5. screening machine coinoi'ising a iframe, a screen in said iiaine upon which material and Watei ai'e adapted to be delivered, pockets in the """aine beneath Said ecieein each pocket having an outlet opening, slide valves for controlling the outlet openings of seid Ygoclets, a longindi' 'L meeting; rod connected with Said slide valves, a transverse i'ock shaft mounted on tliei Lffi'anie and heving an eccentric connected with Said conneci'ing rod, a crank aini on said rock shaft, a pitinan connected with said crank ai'in, and a Water wheel having an eccentric connected with seid pitnian, Said Water wheel being positioned to be opei'aed by the Water supplied to the screening inachine.

In tee'mony ywhereof I have heieunto set iny hand.

WILLAM F. MHIN. 

